Lock for pocket seals



Oct". 25, 1927. M. M COREY.

LOCK FOR POCKET SEALS .Filed Nov. 5, 1925 "22 I i I Z5 15 L78 ggzzwa member of the seal, the stationary member Patented Oct. 25, f

units!) VST'JATESL MATT M. COREY,

'LOCK FOR POCKET snails.

Application filed flovemb'er 6, 1925. Serial No. 67,211. Y

My invention relates topocket seals, and has for its object the production of a locking device for holding the seal closed when t is not in use. I have illustrated my invention as applied to a pocket seal of the kind shown and described in patent to H. S. Folger, No. 836,108 issued November 20, 1906..

In the accompanying drawings Fig. 1 is aside elevation, partly 1n section of a )ocket seal with my inv n l equal to the space between the shoulders 20 and. 21 when the lever is depressed,vand the, construction is such that this projection may applied thereto; a

Fig. 2 is a plan of F g. 1; and

Fig. 3 is a perspective view of the locking device detached. I

In the frame 10 isa plunger 11 provided with a head 12 which carries the movable being supported on the frame. On the top of the plunger 11 is a plate 13, and n a recess inthe frame 'is' a spring 14 which is located under'a rearwardly projectingp'art of plate 13. The action of the spring is to elevate the plunger and thus open the seal.

Located in the frame 10 over the plunger 11 is a transverse pin 15, on which is piv-.

ot'ed the head 22 of hand lever 16. On the under part of head22, and nearthe plvot 15, is a cam 17 which engages the top of plate 13 and serves to depress the die head 12 against the action of spring 14 when the lever 16 is depressed. The cam 15 so con.-

- vstructed that when hand pressure is relieved on lever 16, the spring opens the sealfland the lever moves from full-line to dotted line position. I 7

As shown in Fig. 2, the pivoted end 22 of the lever is locatedin av fork in the frame,

said fork consisting of lugs 18 and 19. In

- front, the metal between these forks forms a shoulder 20, and on the head. 22 of the lever is a corresponding shoulder 21 7 When the spring acts to raise the lever 16, the degree of elevation is limited by shoulder 21 coming into contact with shoulder 20. When the lever is depressed to close the seal, there is an open space between these two shoulders.

. The width of the head 22is a little less than that of the space between the lugs18 spaceis a piece of sheet metal23 having l PATENT oFF1;cE.--f..

or CHICAGO, ILLINOIS, ASSIGN'OR TO R. :o. swrsrmn MFG. 00., or CHICAGO, ILLINOIS, A CORPORATION OF'ILLINOIS. v I

slot 24 thru which the pivoting pin 15 passes. I

In front, the piece 23 has a projection 25 bentat right angles *to the part in which is located the slot 24. At the rear end, the

piece 23 has a small projection bent in the opposite direction and serving as a finger piece for sliding the body 23 back and forth on the pivoting pin 15.

The projection 25 has a vertical depth be pushed into this space to hold the seal closed When such depression occurs. A forward pressure on the projection 26 will move I the'projection 25 out of the spacebetween shoulders 20 and 21, whereupon the spring 14 will open the sealand raise the lever un-. :til should-er 21'contacts with shoulder 20.

From the above descriptionit will be seen that the part illustrated in Fig. 3 is a lock ing device for holdiIig the seal of F ig. 1 in closed position. To lock the seal, it is only a necessary to close it and press the projection 25 into the space between shoulders 20 and 21. l The forcerequired is simply that nee f l essaryto move the weight of the locking piece 23; When in this condition, the m, V

ti-on of the spring moves the lever togrip and hold the projection 25,".which means that the sealis heldlocked by the force i which opens it when the locking piece is pushed forward.

.What Iclaim is: i

In a pocket seal, a frame having a pivoting pin'and a shoulder serving as a stop, an operating lever pivoted upon thefipin' and having a shoulder arranged to engage the shoulder on the frame, a spring supported by the frame and acting upon the lever so as to raise it and bring said shoulders into contact with each other, and a locking device made in the form of a slide guided upon said pin and a part of said frame, said locking device having a lateral projection ar ranged to be insertedv between said shoulders when the operating lever is manually de= pressed.

AT M. COREY. 

